基于浸入式边界方法的运动物体声辐射数值模拟

梁岸; 钟国华; 孙晓峰

基于浸入式边界方法的运动物体声辐射数值模拟

北京航空航天大学能源与动力工程学院,北京 100191

基金项目: 国家自然科学基金(50736007)

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出版历程
- 收稿日期: 2010-02-06
- 修回日期: 2010-04-01
- 刊出日期: 2011-03-28

Numerical simulation of sound radiation from moving bodies based on immersed boundary method

School of Jet Propulsion, Beijing University of Aeronautics and Astronautics,Beijing 100191,China

摘要

摘要: 为了在声学计算中简化网格的处理,从而发展出适用于运动复杂边界问题模拟的计算格式,基于浸入式边界方法,提出了一种适用于无黏流动、无穿透边界条件的处理方法,并对一些简单的运动物体声辐射问题进行了数值模拟.数值结果与解析解得到了令人满意的对比,初步验证了所提出的研究方案的可行性.
- 计算流体动力学 /
- 计算气动声学 /
- 运动边界 /
- 浸入式边界方法 /
- 声辐射
Abstract: To simplify the grid generation procedure in aeroacoustic problem simulation and develop a computational scheme suitable for moving complex geometries,a strategy of guaranteeing the impermeable boundary condition based on the immersed boundary(IB) method was proposed in the paper.Simulations of sound radiation from moving bodies were performed with relatively simple motion.Satisfactory comparison was conducted between present computational data and theoretical solutions,verifying the feasibility of the present method.
- computational fluid dynamics /
- computational aeroacoustics /

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